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Date:	Fri, 22 May 2020 21:58:00 +0900
To:	cygwin AT cygwin DOT com
Subject:	Re: [ANNOUNCEMENT] Updated: mintty 3.1.6
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From:	Takashi Yano via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
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On Fri, 22 May 2020 20:01:31 +0900
Takashi Yano via Cygwin <cygwin AT cygwin DOT com> wrote:
> On Fri, 22 May 2020 12:14:43 +0200
> Thomas Wolff wrote:
> > Hi Takashi,
> > 
> > Am 22.05.2020 um 11:22 schrieb Takashi Yano via Cygwin:
> > > Hi Thomas,
> > >
> > > On Thu, 21 May 2020 19:41:27 +0200
> > > Thomas Wolff wrote:
> > >> I have uploaded mintty 3.1.6 with the following changes:
> > >>
> > >> Window handling
> > >>     * Fixed resource leak when displaying images (#995).
> > >>     * Fixed crash condition on keyboard auto-repeat (#996). (Apologies
> > >> for this one.)
> > >>
> > >> The homepage is at http://mintty.github.io/
> > >> It also links to the issue tracker.
> > > After v3.1.5, the key repeat rate becomes almost halfened.
> > > Is this behaviour by design?
> > >
> > > The key repeat rate is about 30 chars/sec in v3.1.4, but
> > > it is 15 chars/sec in v3.1.5 and v3.1.6.
> > >
> > > It is little bit flustrating in editor cursor movement.
> > >
> > I've uploaded a commit: keyboard auto-repeat handling is now unaffected 
> > by default
> > Explanation: the new auto-repeat rate limitation with a maximum of 30 
> > cps (following the DECARR sequence of VT520) was effectively slowing 
> > down keyboards; I had the impression 30 would be enough... sorry
> 
> I also think 30 cps would be enough, however, the key repeat rate
> is not as setting by ESC[n-p sequence. Measured results in v3.1.6
> are as follows. Actual key repeat rate does not increase linearly.
> 
> ^[[1-p  : 1 cps
> ^[[2-p  : 2 cps
> ^[[3-p  : 3 cps
> ^[[5-p  : 4.7cps
> ^[[10-p : 8.2cps
> ^[[20-p : 14.8cps
> ^[[30-p : 16.3cps

Revising code in wininput.c as follows resolve this problem.

static LONG last_key_time = 0;
static LONG last_message_time = 0;

  LONG message_time = GetMessageTime();
  LONG last_key_time_new = message_time;
  if (repeat) {
#ifdef auto_repeat_cursor_keys_option
    switch (key) {
      when VK_PRIOR ... VK_DOWN: do not return...;
    }
#endif
    if (!term.auto_repeat)
      return true;
    if (message_time - last_message_time < 2*1000/term.repeat_rate)
      /* Key repeat seems to be continued. */
      last_key_time_new = last_key_time + 1000/term.repeat_rate;
    last_message_time = message_time;
    if (message_time - last_key_time < 1000/term.repeat_rate)
      return true;
  }
  last_key_time = last_key_time_new;

^[[1-p   : 1 cps
^[[2-p   : 2 cps
^[[3-p   : 3 cps
^[[5-p   : 5 cps
^[[10-p  : 9.7cps
^[[20-p  : 19.4cps
^[[30-p  : 29.0cps

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
--
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